import org.junit.Test;

import java.util.Vector;

/**
 * @author Hujf
 * @title: test
 * @date 2021/3/1510:56
 * @description: TODO
 */
public class test {
    @Test
    public void t(){
        Vector cv = new Vector();
        cv.add(1);
        cv.add(2);
        cv.add(2);
        System.out.println(cv.size());

    }
}
